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v3.20.2

Condensed Statements of Changes in Convertible Preferred Stock and Stockholders' Deficit (Parenthetical) $ in Thousands | 3 Months Ended
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Mar. 31, 2019 USD ($)
Series H Convertible Preferred Stock |
Issuance costs | $ 3

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- Definition Temporary equity issuance costs. + References No definition available. + Details
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Namespace Prefix: | bdsx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesHPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |